Meaning of M-1 in English

M-1

ˈemˈwən noun

or m-1 rifle

( plural m-1's or m-1 rifles )

Usage: usually capitalized M

: a gas-operated semiautomatic .30 caliber rifle fed from a magazine containing a clip of eight rounds, mechanically capable of firing 16 to 32 rounds a minute, having an effective range of 500 yards, and weighing 9 1/2 pounds — called also Garand rifle

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.